Physics Questions

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1.
1 point
If there is battery with a potential difference of 10 V split down two identical pathways each with identical loads, each load would have a potential difference of:
2.
1 point
What type of energy is wasted by a light bulb?
3.
1 point
If a load has an input energy of 42 J and an output energy of 12 J, what is the efficiency of the load?
4.
1 point
What is the current in a ciruit with a resistance of 6 ohms and a potential difference of 18 V?
5.
1 point
An atom that has lost two electons is a:
6.
1 point
Which of the following is a renewable energy resource?
7.
1 point
The formula for resistance is R =
8.
1 point
The activity series is as follows:
Acetate (weak hold on electrons)
Paraffin Wax
Ebonite (strong hold on electrons)
What charge will acetate have if rubbed with ebonite?
9.
1 point
Electricity that is not moving is called:
10.
1 point
I is the symbol for:
11.
1 point
When a thundercloud is near the Earth, the charge of objects on the Earth becomes positive. This is called charging by:
12.
1 point
Circuits with more than one path for the electrons to travel are called:
13.
1 point
A lightning rod is taller than your house and attached to the:
14.
1 point
The white wire in a house carries:
15.
1 point
Copper holds electrons poorly, and is an example of a(n):
16.
1 point
What is the voltage in a circuit with a power of 4 W and a current of 8 A?
17.
1 point
What one light is turned of in series, the other light:
18.
1 point
What charge do electrons have?
19.
1 point
Resistance goes up if:
20.
1 point
If the current leaving battery in a series ciruit is 6 A, there should be a current of ___?_____ returning to the series ciruit.